Aeroplane



R. HANRIOT AND F. GRATIEUX.

AEROPLANE. APPLICATION FILED Nov. 23, 1917.

2 SHEETS-SHEET I.

Patented Oct. 5,1920.

B. HANRIOT AND F. GRAHEUX.

AEROPLANE. I APPLICATION FILED N.QV- 23, [917. 1,354,827. Patented 001:. 5,1920.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

RENE HANRIOT, OF NEUILLY-SUR-SEINE, AND FERNAND GRATIEUX, OF PARIS, FRANCE, ASSIG-NORS TO SOCIETE R. I-IANRIOT ET CIE., OF BILLANCOURT, FRANCE.

AEROPLANE.

Application filed. November 23, 1917.

To all 10 7mm it may concern:

Be it known that I, RENI I HANRIOT, a citizen of the French Republic, residing at 32 Avenue du Roule, Neuilly-sur-Seine, in the Department of Seine, France, and I, FER- NAND GRATIEUX, a citizen of the French Republic, residing at 14 Rue Oberkampf, Paris, in the Department of Seine, France, have invented a new and useful Improvement in Aeroplanes, of which the following is a specification.

Our present invention has for its object an improved aeroplane characterized by the special arrangements of its wings, these arrangements having especially the effect of insuring a greater stability of the apparatus, of contributing to the "obtaining of a higher speed and of giving a greater facility of movement especially in the motions of ascent, and finally of rendering the control more easy.

An aeroplane constructed according to our invention is illustrated in the accompanying drawings in which:

Figure 1 shows a front View.

Fig. 2 shows a side view.

Fig. 3 shows a plan view.

According to the invention the upper wings a are placed much in advance of the apparatus in regard to the lower wings I), the amount of advancement m being definitely greater than that allowed hitherto, contributes to an increase of support in power and of increase of speed of the apparatus.

Moreover, the upper wings a are arranged in the form of a V visibly inclined whereas the lower wings I) are of smaller width and dimensions and are horizontal. The combination of this particular construction of the Specification of Letters Patent.

Patented Oct. 5, 1920.

Serial No. 203,550.

wings constitutes the characteristic feature of the invention and it is proved that the simultaneous employment of these special features combined with the selection of the shapes of least resistance and with the minimum weight of all the parts of the apparatus insures under the exceptional conditions of high service the realization of a chaser aeroplane of great speed.

It must be understood that the application of the invention characterized by the special arrangement of the wings as above set forth, is independent of the other parts of the apparatus, especially of the motor which may be of any suitable type adapted to the requirements of the aviator. Moreover while the invention is specially characterized by the use in combination of the various details which have been above set forth, it will be obvious that the patent will cover also the utilization of a portion of these details.

\Vhat we claim is: v

A bi-plane comprising upper wings set at an angle to one another with the points of junction nearer to the lower wings than the outer ends of said upper wings and horizontal lower wings of less lateral and front to back extension than said upper wings and with their leading edges to the rear of the middle line of the upper wings.

In testimony whereof we sign our names to this specification in the presence of two subscribing witnesses.

RENE HANRIOT. FERNAND GRATIEUXI l/Vitnesses:

HENRI BLoUIN, CHAs. P. PRESSLY. 

